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2
Understanding HSM Concepts
Before running HSM in your production environment, you need to understand various definitions and concepts. For each concept, HSM provides a configuration option that you use to manage the HSM environment. This chapter presents an explanation of the HSM concepts and
configuration options, structured around the following managed entities in the system:
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Facility
•
Shelf
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Archive class
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Device
•
Volume
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Cache
•
Policy
•
Schedule
This chapter also defines the relationships among the managed entities, and provides guidelines
for their definition to create an optimal HSM environment. Once you understand the configuration options, you can proceed with the required configuration tasks, as described in the Getting
Started with HSM Chapter of the HSM Installation Guide.
For additional information and guidelines for migrating to a more specialized environment that
best meets your system requirements, see Chapter 3.
2.1 The HSM Environment
The HSM environment consists of the definitions you create and the relationships that exist
among the definitions. The definitions described in the following sections are maintained in definition databases. The HSM environment is shown in Figure 2–1.
Understanding HSM Concepts 2–1